99XJSE
NAXJA Forum User
- Location
- Columbus, IN
I've been noticing my transmission slip after start up and I wasn't able to find anything searching this forum or others related to my unique situation. Just wanted to see if any transmission experts have any ideas what to try?
Specs: 99 XJ 4.0 4x4 AW4 currently with 203,000 miles
Symptoms: At startup I put the Jeep in drive and when I pull away the engine revs up just fine, but you can feel partial power passing through the transmission to the ground. Once it catches then you feel all power transfer to the ground and it shifts to 2nd like normal. When it catches there is no clunk, its a soft transition like you feel when it shifts into different gears. Once it gets past this delay or slip it drives normal. So the transmission fluid is still cold at this point. No other shifting issues after this point. If I turn the engine off and restart within under a 4hr period it doesn't do this. I just does it when it sits for 4hrs or more.
Done Already: I have changed the fluid several times over the last 1.5years using the dilution method by draining whats in the pan and refilling it. Using Valvoline Maxlife Dex/Merc ATF.
Fluid level is always perfect when I check it.
Ive adjusted the throttle kickdown cable.
I'm wondering if the oil pump in the transmission is starting to get weak or possible bad solenoid.
Any ideas what else I can check or what is likely the culprit? I'm capable of changing the solenoids and doing other minor transmission work. If a full transmission rebuild is needed... Ill find a good shop for that!
Thanks!
Specs: 99 XJ 4.0 4x4 AW4 currently with 203,000 miles
Symptoms: At startup I put the Jeep in drive and when I pull away the engine revs up just fine, but you can feel partial power passing through the transmission to the ground. Once it catches then you feel all power transfer to the ground and it shifts to 2nd like normal. When it catches there is no clunk, its a soft transition like you feel when it shifts into different gears. Once it gets past this delay or slip it drives normal. So the transmission fluid is still cold at this point. No other shifting issues after this point. If I turn the engine off and restart within under a 4hr period it doesn't do this. I just does it when it sits for 4hrs or more.
Done Already: I have changed the fluid several times over the last 1.5years using the dilution method by draining whats in the pan and refilling it. Using Valvoline Maxlife Dex/Merc ATF.
Fluid level is always perfect when I check it.
Ive adjusted the throttle kickdown cable.
I'm wondering if the oil pump in the transmission is starting to get weak or possible bad solenoid.
Any ideas what else I can check or what is likely the culprit? I'm capable of changing the solenoids and doing other minor transmission work. If a full transmission rebuild is needed... Ill find a good shop for that!
Thanks!